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- Documents (1222)
News - Events and Proceedings
Workshop celebrates end of long-running PROBA-1 satellite
In January, ESA will mark the end of its long-running CHRIS sensor onboard the PROBA-1 satellite in a special workshop.
News - Thematic area articles
Transforming space data into climate action
ESA’s Earth observation activities are playing a key role in the revitalised global drive to combat climate change.
Document - User Guide
Third Party Missions, Cat-1 Data Availability
This brochure gives a quick overview on the availability of the Third Party Missions IRS-P3, JERS-1, NIMBUS, Proba, Landsat, KOMPSAT-1, SCISAT-1, Terra/Aqua, NOAA, QSCAT, OrbView, SPOT-1,-2,-3,-4, ALOS.
Document - Technical Note
The RA-2 On-Board Tracker and its Autonomous Adaptable Resolution
This technical note describes the complete functionality of the RA-2 on-board Tracker and how its Resolution Selection Logic (RSL) works. It gives a detailed analysis of the algorithm and its configuration parameters.
Document - General Reference
The Envisat Radar Altimeter System (RA-2)
This article was published in the ESA Bulletin Nr. 98 and givesdetails on RA-2 and on its role in the ENVISAT mission.
Document - General Reference
Taking-the-Measure-of-Earth-Fifteen-Years-of-Progress-in-Radar-Altimetry.pdf
This article is extracted from ESA Bulletin Nr. 128.
Data - EO Sign In Authentication (Open)
Sea Ice Thematic Data Product [ALT_TDP_SI]
This is the Sea Ice Thematic Data Product (TDP) V1 resulting from the ESA FDR4ALT project and containing the sea ice related geophysical parameters, along with associated uncertainties: snow depth, radar and sea-ice freeboard, sea ice thickness and concentration. The collection covers data for the ERS-1, ERS-2 and Envisat missions, and bases on Level 1 data coming from previous reprocessing (ERS REAPER and the Envisat V3.0) but taking into account the improvements made at Level 0/Level 1 in the frame of FDR4ALT (ALT FDR). The Sea Ice TDP provides data from the northern or southern hemisphere in two files corresponding to the Arctic and Antarctic regions respectively for the winter periods only, i.e., October to June for the Arctic, and May to November for the Antarctic. For many aspects, the Sea Ice TDP is very innovative: First time series of sea-ice thickness estimates for ERS Homogeneous calibration, allowing the first Arctic radar freeboard time series from ERS-1 (1991) to CryoSat-2 (2021) Uncertainties estimated along-track with a bottom-up approach based on dominant sources ERS pulse blurring error corrected using literature procedure [Peacock, 2004] The FDR4ALT products are available in NetCDF format. Free standard tools for reading NetCDF data can be used. Information for expert altimetry users is also available in a dedicated NetCDF group within the products. Please consult the FDR4ALT Product User Guide before using the data. The FDR4ALT datasets represent the new reference data for the ERS/Envisat altimetry missions, superseding any previous mission data. Users are strongly encouraged to make use of these datasets for optimal results.
Document - Product Readme Note
Retrieving-Canopy-Structure-from-Hyperspectral-Multi-Angular-Satellite-Data.pdf
This article was presented at the 5th EARSeL SIG IS workshop Imaging Spectroscopy : Innovation in Environmental Research held on 23-25 April 2007 in Bruges, Belgium, ed. By I. Reusen and J. Cools. EARSEL, 2007. 7 p.
Document - Conference Presentation - Poster
Remaining-East-West-bias-explained.pdf
This presentation shows the results obtained from a scientific assessment on the use of GDR-D improved orbit standard and of the consequent improvement in the Sea Surface Height and Sea Level Anomaly Data of altimeter GDR data (A. Ollivier, OSTST 2011).
News - General News
Release of CHRIS PROBA-1 toolbox for SNAP
PROBA -1 continues to provide valuable hyperspectral data to the scientific community, and so the tools to handle this data have been incorporated into ESA’s SNAP multi-mission toolbox.
Document - Publication - Paper
RA-2-S-Band-anomaly-detection-and-waveforms-reconstruction.pdf
This paper describes the algorithm developed for the L1b processor that allows to set a flag identifying the data affected by the S-Band anomaly and reconstruct normal echo waveforms.
Document - Product Cal/Val Plan/Report
RA-2-In-Flight-Instrument-Calibration-and-Level-1b-Verification-Plan.pdf
This document describes the plan for the RA-2 In-flight Instrument Calibration and Level lb Verification procedures.
Data - EO Sign In Authentication (Open)
PROBA-1 HRC
The HRC Level 1A product is an image with a pixel resolution of 8m. The data are grey scale images, an image contains 1026 x 1026 pixels and covers an area of 25 km2. HRC data is supplied in BMP format. All PROBA-1 passes are systematically acquired according to the current acquisition plan, HRC data are processed every day to Level 1A and made available to ESA users. Spatial coverage: Check the spatial coverage of the collection on a map available on the Third Party Missions Dissemination Service.
News - Infographics
PROBA-1 - From technology demonstration to long-term Earth observation
Learn about ESA's PROBA-1 (Project for On-Board Autonomy) mission in our new infographic.
Mission - Third Party Missions
PROBA-1
PROBA-1 is a technology demonstration satellite that later became an operational Earth observation mission.